242 Breakpoints in the 200-kb deletion-prone P20 region of the DMD gene are widely spread

Using whole cosmids as probes, we have mapped 242 DMD BMD deletion breakpoints located in the major deletion hot spot of the DMD gene. Of these, 113 breakpoints were mapped more precisely to individual restriction enzyme fragments in the distal 80 kb of the 170-kb intron 44. An additional 12 breakpo...

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Veröffentlicht in:Genomics (San Diego, Calif.) Calif.), 1991, Vol.10 (3), p.631-639
Hauptverfasser: Blonden, L.A.J., Grootscholten, P.M., den Dunnen, J.T., Bakker, E., Abbs, S., Bobrow, M., Boehm, C., van Broeckhoven, C., Baumbach, L., Chamberlain, J., Caskey, C.T., Denton, M., Felicetti, L., Galluzi, G., Fischbeck, K.H., Francke, U., Darras, B., Gilgenkrantz, H., Kaplan, J.-C., Herrmann, F.H., Junien, C., Boileau, C., Liechti-Gallati, S., Lindlöf, M., Matsumoto, T., Niikawa, N., Müller, C.R., Poncin, J., Malcolm, S., Robertson, E., Romeo, G., Covone, A.E., Scheffer, H., Schröder, E., Schwartz, M., Verellen, C., Walker, A., Worton, R., Gillard, E., van Ommen, G.J.B.
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container_issue 3
container_start_page 631
container_title Genomics (San Diego, Calif.)
container_volume 10
creator Blonden, L.A.J.
Grootscholten, P.M.
den Dunnen, J.T.
Bakker, E.
Abbs, S.
Bobrow, M.
Boehm, C.
van Broeckhoven, C.
Baumbach, L.
Chamberlain, J.
Caskey, C.T.
Denton, M.
Felicetti, L.
Galluzi, G.
Fischbeck, K.H.
Francke, U.
Darras, B.
Gilgenkrantz, H.
Kaplan, J.-C.
Herrmann, F.H.
Junien, C.
Boileau, C.
Liechti-Gallati, S.
Lindlöf, M.
Matsumoto, T.
Niikawa, N.
Müller, C.R.
Poncin, J.
Malcolm, S.
Robertson, E.
Romeo, G.
Covone, A.E.
Scheffer, H.
Schröder, E.
Schwartz, M.
Verellen, C.
Walker, A.
Worton, R.
Gillard, E.
van Ommen, G.J.B.
description Using whole cosmids as probes, we have mapped 242 DMD BMD deletion breakpoints located in the major deletion hot spot of the DMD gene. Of these, 113 breakpoints were mapped more precisely to individual restriction enzyme fragments in the distal 80 kb of the 170-kb intron 44. An additional 12 breakpoints were mapped to the adjacent 10 kb of introm 45. The breakpoints are distributed over the entire region, with no significant local variation in frequency. Furthermore, deletion sizes vary and are not influenced by the positions of the breakpoints. This argues against a predominant role of one or a few specific sequences in causing frequent rearrangements. It suggests that structural characteristics or a more widespread recombinogenic sequence makes this region so susceptible to deletion. Our study revealed several RFLPs, one of which is a 300-bp insertion/deletion polymorphism. Abnormally migrating junction fragments are found in 81% of the precisely mapped deletions and are highly valuable in the diagnosis of carrier females.
doi_str_mv 10.1016/0888-7543(91)90445-K
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Of these, 113 breakpoints were mapped more precisely to individual restriction enzyme fragments in the distal 80 kb of the 170-kb intron 44. An additional 12 breakpoints were mapped to the adjacent 10 kb of introm 45. The breakpoints are distributed over the entire region, with no significant local variation in frequency. Furthermore, deletion sizes vary and are not influenced by the positions of the breakpoints. This argues against a predominant role of one or a few specific sequences in causing frequent rearrangements. It suggests that structural characteristics or a more widespread recombinogenic sequence makes this region so susceptible to deletion. Our study revealed several RFLPs, one of which is a 300-bp insertion/deletion polymorphism. Abnormally migrating junction fragments are found in 81% of the precisely mapped deletions and are highly valuable in the diagnosis of carrier females.</description><subject>Biological and medical sciences</subject><subject>Chromosome Deletion</subject><subject>Chromosome Mapping</subject><subject>Cosmids</subject><subject>Diseases of striated muscles. Neuromuscular diseases</subject><subject>Dystrophin - genetics</subject><subject>Female</subject><subject>Gene Frequency</subject><subject>Genes</subject><subject>Humans</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Muscular Dystrophies - genetics</subject><subject>Neurology</subject><subject>Polymorphism, Restriction Fragment Length</subject><subject>Recombination, Genetic</subject><subject>restriction fragment length polymorphism</subject><subject>X Chromosome - ultrastructure</subject><issn>0888-7543</issn><issn>1089-8646</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1991</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkE1v1DAQhi1EVZaWfwCSLyB6CIyTiT8uSNAvUFvBAQ6cLMcZF9NsstjZov57vN0VvcHJkt9nXs08jD0X8EaAkG9Ba12pFpvXRhwZQGyri0dsIUCbSkuUj9niL_KEPc35JwCYRtf7bF9IZRTKBfteY80_JHI3qymOc-Zx5PMP4jVAddPxngaa4zRWqzSNxL_UwBNdlw8-hXvu5OqEX1OJXCL-Oxb-judV6esP2V5wQ6Znu_eAfTs7_Xr8sbr8fP7p-P1l5VvRzFWrsatRu9Bjjx2gROFNpzE0Cok0BNOEgFI6o3oEjWhE21DtOqkDdmiaA_Zq21tW_LWmPNtlzJ6GwY00rbNVNRiBqP4LCgkISkIBcQv6NOWcKNhVikuX7qwAu1FvN17txqs1wt6rtxdl7MWuf90tqX8Y2rou-ctd7rJ3Q0hu9DE_YEY1QujNQe-2HBVrt5GSzT7S6KmPifxs-yn-e5E_pOeccg</recordid><startdate>1991</startdate><enddate>1991</enddate><creator>Blonden, L.A.J.</creator><creator>Grootscholten, P.M.</creator><creator>den Dunnen, J.T.</creator><creator>Bakker, E.</creator><creator>Abbs, S.</creator><creator>Bobrow, M.</creator><creator>Boehm, C.</creator><creator>van Broeckhoven, C.</creator><creator>Baumbach, L.</creator><creator>Chamberlain, J.</creator><creator>Caskey, C.T.</creator><creator>Denton, M.</creator><creator>Felicetti, L.</creator><creator>Galluzi, G.</creator><creator>Fischbeck, K.H.</creator><creator>Francke, U.</creator><creator>Darras, B.</creator><creator>Gilgenkrantz, H.</creator><creator>Kaplan, J.-C.</creator><creator>Herrmann, F.H.</creator><creator>Junien, C.</creator><creator>Boileau, C.</creator><creator>Liechti-Gallati, S.</creator><creator>Lindlöf, M.</creator><creator>Matsumoto, T.</creator><creator>Niikawa, N.</creator><creator>Müller, C.R.</creator><creator>Poncin, J.</creator><creator>Malcolm, S.</creator><creator>Robertson, E.</creator><creator>Romeo, G.</creator><creator>Covone, A.E.</creator><creator>Scheffer, H.</creator><creator>Schröder, E.</creator><creator>Schwartz, M.</creator><creator>Verellen, C.</creator><creator>Walker, A.</creator><creator>Worton, R.</creator><creator>Gillard, E.</creator><creator>van Ommen, G.J.B.</creator><general>Elsevier Inc</general><general>Elsevier</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7T3</scope><scope>8FD</scope><scope>FR3</scope><scope>P64</scope><scope>RC3</scope><scope>7X8</scope></search><sort><creationdate>1991</creationdate><title>242 Breakpoints in the 200-kb deletion-prone P20 region of the DMD gene are widely spread</title><author>Blonden, L.A.J. ; Grootscholten, P.M. ; den Dunnen, J.T. ; Bakker, E. ; Abbs, S. ; Bobrow, M. ; Boehm, C. ; van Broeckhoven, C. ; Baumbach, L. ; Chamberlain, J. ; Caskey, C.T. ; Denton, M. ; Felicetti, L. ; Galluzi, G. ; Fischbeck, K.H. ; Francke, U. ; Darras, B. ; Gilgenkrantz, H. ; Kaplan, J.-C. ; Herrmann, F.H. ; Junien, C. ; Boileau, C. ; Liechti-Gallati, S. ; Lindlöf, M. ; Matsumoto, T. ; Niikawa, N. ; Müller, C.R. ; Poncin, J. ; Malcolm, S. ; Robertson, E. ; Romeo, G. ; Covone, A.E. ; Scheffer, H. ; Schröder, E. ; Schwartz, M. ; Verellen, C. ; Walker, A. ; Worton, R. ; Gillard, E. ; van Ommen, G.J.B.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c513t-584b248afd4d4b04641c9b84f374ee80f93ff466a97d408449153e2ab68f4b493</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1991</creationdate><topic>Biological and medical sciences</topic><topic>Chromosome Deletion</topic><topic>Chromosome Mapping</topic><topic>Cosmids</topic><topic>Diseases of striated muscles. 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Of these, 113 breakpoints were mapped more precisely to individual restriction enzyme fragments in the distal 80 kb of the 170-kb intron 44. An additional 12 breakpoints were mapped to the adjacent 10 kb of introm 45. The breakpoints are distributed over the entire region, with no significant local variation in frequency. Furthermore, deletion sizes vary and are not influenced by the positions of the breakpoints. This argues against a predominant role of one or a few specific sequences in causing frequent rearrangements. It suggests that structural characteristics or a more widespread recombinogenic sequence makes this region so susceptible to deletion. Our study revealed several RFLPs, one of which is a 300-bp insertion/deletion polymorphism. Abnormally migrating junction fragments are found in 81% of the precisely mapped deletions and are highly valuable in the diagnosis of carrier females.</abstract><cop>San Diego, CA</cop><pub>Elsevier Inc</pub><pmid>1679746</pmid><doi>10.1016/0888-7543(91)90445-K</doi><tpages>9</tpages></addata></record>
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identifier ISSN: 0888-7543
ispartof Genomics (San Diego, Calif.), 1991, Vol.10 (3), p.631-639
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1089-8646
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subjects Biological and medical sciences
Chromosome Deletion
Chromosome Mapping
Cosmids
Diseases of striated muscles. Neuromuscular diseases
Dystrophin - genetics
Female
Gene Frequency
Genes
Humans
Male
Medical sciences
Muscular Dystrophies - genetics
Neurology
Polymorphism, Restriction Fragment Length
Recombination, Genetic
restriction fragment length polymorphism
X Chromosome - ultrastructure
title 242 Breakpoints in the 200-kb deletion-prone P20 region of the DMD gene are widely spread
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